Brian Chenoweth

"Grey's Anatomy's" three-episode story arc continues with a part two that will challenge the interns of Seattle Grace -- and "Grey's" fans as well -- like never before.

Beginning February 8, “Grey’s Anatomy” enters a three-episode story arc that will challenge the interns of Seattle Grace -- and "Grey’s" fans as well -- like never before. Elizabeth Reaser (Independent Spirit Award nominee for "Sweet Land") guest stars as a patient over multiple episodes.

Monica's ovulating so she plans to sleep with Chandler but they end up fighting. Ross locks himself and Rachel out of the apartment with Emma inside. All this leaves Phoebe and Joey alone at Phoebe's birthday celebration.

Chandler must remain in Tulsa during Christmastime because of a big deadline at work Monica suspects the worst when she discovers that he will be joined by a beautiful co-worker, Wendy

Christine urges Ritchie's school principal to let the class take the subway on a field trip in order to learn real-world skills.

Larry has a scheduling conflict, takes issue with some work associates, and hosts a pair of ungrateful house guests.